Magnesium
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Blood Test for Muscle Cramps and Fatigue
Magnesium, Serum
- Reveal your energy levels and beat fatigue
- Pinpoint muscle cramps and twitching causes
- Assess heart health and prevent complications
$99
First results as soon as overnight*
90 day happiness guarantee
We stand behind our service
Prescription & fees included
Go directly to the lab, no extra fees
Easy to understand results
With friendly doctor's notes & guidance
Fast & convenient
Lab visit as quick as 10 mins in & out
See what you get
90 day happiness guarantee
We stand behind our service
Prescription & fees included
Go directly to the lab, no extra fees
Easy to understand results
With friendly doctor's notes & guidance
Fast & convenient
Lab visit as quick as 10 mins in & out
What's this test for?
This test is ideal if you're experiencing muscle cramps, twitching, weakness, or persistent fatigue that won't go away. It helps identify if your magnesium levels are too low or too high, which can affect your energy, muscle function, heart rhythm, and nervous system. Many people use this test when they suspect nutritional deficiencies or want to understand why they're having these uncomfortable symptoms.
What's included in this test?
This test measures the amount of magnesium in your blood, which is essential for nerve function, muscle relaxation, heart rhythm, and energy production. Magnesium helps regulate hundreds of processes in your body, including converting food into energy and keeping your muscles and nerves working properly. Low levels can cause cramps and fatigue, while high levels may indicate kidney problems or other health issues.
What happens after I get my results?
You'll receive detailed doctor notes in simple language explaining what your magnesium level means for your energy, muscle function, and overall health. These notes include personalized recommendations like dietary changes to increase magnesium-rich foods, supplement suggestions if needed, or whether you should follow up with your doctor for further evaluation. You'll also get the standard lab report and can track your magnesium levels over time using our trends feature to see how your dietary changes or supplements are working.
Who should consider getting this test?
This test is important for people experiencing frequent muscle cramps, spasms, or twitching, as well as those dealing with chronic fatigue or weakness. It's also valuable for individuals with digestive issues like chronic diarrhea, people with diabetes, those taking diuretics or certain medications, and anyone concerned about their heart health. If you have kidney disease or drink alcohol heavily, monitoring your magnesium is especially important.
What symptoms indicate I may need this test?
Common symptoms of magnesium imbalance include muscle cramps or spasms, twitching eyelids, persistent fatigue, weakness, and irregular heartbeat. You might also experience nausea, loss of appetite, numbness or tingling, or mood changes like anxiety and irritability. If you're having trouble sleeping, experiencing frequent headaches, or notice your muscles are constantly tense, these could also be signs of magnesium issues.
How can I naturally support healthy magnesium levels?
You can boost your magnesium naturally by eating more leafy green vegetables like spinach and kale, nuts and seeds (especially almonds, cashews, and pumpkin seeds), whole grains, beans, and avocados. Dark chocolate is also a good source. Reducing caffeine and alcohol intake can help your body retain magnesium better, and managing stress through relaxation techniques supports proper magnesium balance. If you exercise heavily, be sure to replace lost minerals through your diet.
What is magnesium and why does it matter?
Magnesium is an essential mineral that your body needs for over 300 different processes, including muscle and nerve function, energy production, and maintaining a steady heartbeat. It acts like nature's relaxation mineral, helping your muscles relax after they contract and keeping your nervous system calm. Without enough magnesium, your muscles can cramp, your energy drops, and your heart rhythm can become irregular, which is why maintaining healthy levels is so important for overall wellness.
What does low magnesium mean?
Low magnesium, called hypomagnesemia, means your body doesn't have enough of this essential mineral to function optimally. This can happen due to poor diet, digestive problems that prevent absorption, excessive alcohol use, or certain medications like diuretics. Low magnesium can cause muscle cramps, fatigue, irregular heartbeat, and in severe cases, can affect your bones and nervous system. It's often correctable through diet changes or supplements.
What does high magnesium mean?
High magnesium, called hypermagnesemia, is less common and usually indicates that your kidneys aren't removing magnesium properly from your blood. This can happen with kidney disease, taking too many magnesium supplements, or using certain medications. Symptoms might include nausea, weakness, low blood pressure, or irregular heartbeat. If your magnesium is high, your doctor will want to check your kidney function and review any supplements or medications you're taking.
How often should I retest my magnesium levels?
If your magnesium is normal and you have no symptoms, annual testing as part of routine wellness checks is usually sufficient. If your levels are low and you're making dietary changes or taking supplements, retest in 6-8 weeks to see if your interventions are working. People with chronic conditions affecting magnesium like kidney disease, diabetes, or digestive disorders may need testing every 3-6 months, or as recommended by their healthcare provider.
How’s this work?
Long story short:
- In the test options, use the filters or search box to narrow your choices and find the test you want.
- If you need a hand navigating through options, text our super friendly support team at 754-799-7833, and we'll provide tailored suggestions to help you find the ideal test.
- Once your order is placed, we’ll create your doctor’s lab order remotely, without any need for you to make a trip to a doctor in person or to talk to the doctor. Expect to receive your doctor’s lab order right in your inbox. It will also be in your patient portal if you need to find it later. We’ll also include instructions regarding fasting and other requirements for your test. Your patient portal will be auto-created hassle-free during checkout.
- If this is your first time ordering, you'll be prompted to create a password for instant login access to your patient portal. It's a quick way to conveniently access your orders and results whenever you want.
- When you’re ready, visit one of our 4,000 locations. Just bring your ID – no printing or faxing of your lab order is needed, as your order and details will already be in the lab system.
- Note that most lab locations don’t accept walk-ins, so it’s best to book an appointment in advance. Don’t worry – we’ll provide detailed instructions along the way.
- You’ll get your results via email & SMS and dive into understanding your body better. Yup, that easy! If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.
How do I know which test to get?
Just text or call us at 754-799-7833, email us at [email protected], and we'll gladly help you. We've got your back and reply quickly.
Is it possible to make changes to my lab order if I made a mistake with the name, date of birth, or any other details?
Just reach out to us via text at 754-799-7833 or shoot us an email at [email protected]. Remember to include your order number and let us know the correct information you’d like to update. Our awesome team will jump right in and make sure everything is sorted out and accurate for you.
There are no changes necessary if your address is wrong on the requisition though. We don’t mail anything out.
Our lab requires an address to be listed to generate an order.
Do you accept health insurance?
Our services are strictly self-pay and cannot be submitted to your health insurance provider except for Health Savings Accounts or Flexible Savings Accounts.
This policy applies to all insurance companies, including federal health insurance programs like Medicare.
If you have any questions, please text us at 754-799-7833 or email [email protected].
Can I cancel my order?
We get it – sometimes your needs change.
As long as your samples haven’t been collected yet, we’re happy to help you cancel your order.
If you have any further questions, please text us at 754-799-7833 or email [email protected].
You can read more about our cancellation policy here.
How can I find a lab location near me?
Before you proceed with your order, feel free to browse through all our lab locations here. This will give you the peace of mind of knowing that there's a lab nearby your home, office or your favorite gym.
If you have any questions, please text us at 754-799-7833 or email [email protected] and we'll gladly help you.
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* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.
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Blood Test for Muscle Cramps and Fatigue
- Reveal your energy levels and beat fatigue
- Pinpoint muscle cramps and twitching causes
- Assess heart health and prevent complications
$99
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